Oracle Linux offers many excellent features. First of all, there is zero downtime patching, Unbreakable Enterprise Kernel, free to use with no mandatory license required, 100% RHEL binary compatibility, excellent cloud and container support, a strong security stack, and stable long-term support.
Out of those features, the biggest one that has made the most difference for my team and organization is zero downtime patching.
Oracle Linux has a clear positive impact on our organization, both operationally and from a security and compliance standpoint. In summary, Oracle Linux improves our uptime, reduces operational overhead, and allows us to respond faster to security risks without disrupting the business.
Specifically, Oracle Linux has reduced operational overhead and improved uptime significantly. Before Oracle Linux, monthly and quarterly kernel patches were required, typically two patches were necessary, and we needed two to three engineers, which took at least two to four hours per window to address any problem. With Oracle Linux, we have achieved a 60-70% reduction in OS level maintenance effort. What has improved on the uptime and reliability side is that before each kernel patch required a reboot, even with rolling restart. After implementation, kernel and critical CVEs can be patched without a reboot, allowing the system to stay online continuously and avoiding restart-related failures. Oracle Linux has significantly reduced operational overhead by eliminating reboot-based kernel patching. We cut our maintenance effort by over 60% and improved uptime from around 99.9% to near 99.99% with zero outages related to kernel updates after adoption.